Solar PV system like other other electrical systems is safe when
operating correctly. However, they may cause trouble when the system is
suffering from malfunction. Such hazard may cause simple electric shock to
deadly electrocution. Also there are some potentially dangerous hazards
associated with some components.
·
SAFETY AROUND SOLAR PANELS
The owner of the system must
not undertake any maintenance of the solar modules except simple cleaning.
Hazards
related to solar panels
§ Many numbers of solar panels
of lower voltage may be connected in series as per the system design and
requirement to get higher voltage. While the lower DC voltage up to 48V does
not possess potentially high danger of electric shock, the system above 48Vdc
may give electric shock in wet unprotected condition.
§ Falling off roof while
working
SAFETY PRECAUTIONS
§ Always wear insulated boots
before working with connection of solar panels.
If the system is above 120V dc then, compulsorily wear
insulated boots before working with the connection of solar panels.
The outer body of solar panels is well insulated and
grounded in case of any leakage.
§ Do not leave any part of the
wire connection outside junction/connection box without insulation.
§ Support yourself correctly
while working with solar panels in case of narrow/difficult place.
·
Safety
Around Battery Bank
The owner of the system must
not undertake any maintenance to battery bank of 120V Dc or above.
Hazards
related to Lead acid battery bank
§
explosion due to Hydrogen gas
§
Burning caused by dil. sulphuric acid in cells of battery
§
Shorting of positive and negative terminals leading to fire hazards
§
Electrocution caused by battery bank of 120V or above
SAFETY
PRECAUTIONS
§ Do not wear any metallic
objects like bracelets, chains, watches, etc while working near the battery. It
may accidently short circuit the battery terminal and cause unrecoverable
damages.
§ Be careful while using
metallic objects and tools not to cause short circuit between the terminals of
battery. Battery has very high energy density and may cause huge loss with fire
hazards and explosion
§ Do not work in vicinity of
battery bank if there is strong smell of Sulphuric Acid
§ Do not smoke near the
battery bank
§ Do not cause any flame near
the battery bank. Hydrogen is highly combustible gas.
§ Protect your clothes from
spilling acids like acid resistant aprons while working near battery bank
§ Wear safety goggles to
protect your eyes. In case your eyes get contaminated with acid, rinse it with
clean water and seek the medical attention immediately.
§ Use baking (bicarbonate)
soda to neutralize the spilled acid or cure the acid burn.
§ Seek the immediate medical
attention along with first aid in case of electrocution.
§ Keep the room well
ventilated
Safety
Around balance of system (Bos) components
Balance of System(BOS)
components includes the power conditioning and control unit of the system. The
main BOS components in Solar PV System are Solar Charge Controller and DC to AC
Inverter.
Hazards
related to bos components
§
Electrocution due to leakage current
§
Electrocution due to insulation failure
SAFETY
PRECAUTIONS
§ Follow the recommendations
provided in manual of BOS components
§ Always keep the area clean
and dry
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